Synonyms: Calycina epiphylla, Helotium agrostideum, Helotium culmigenum, Helotium epiphyllum, Helotium rubicolum, Peziza epiphylla, Peziza fructigena, Phaeohelotium epiphyllum.
Hymenoscyphus epiphyllus is a species of fungus in the family Helotiaceae, characterized by small, disc-shaped apothecia that are typically 1-3 mm in diameter. In East and Central Texas, it has been found growing on decaying leaves, particularly those of oak and other deciduous trees, often in shaded, moist environments. The fungus produces white to pale yellowish apothecia with a short, hairy stem and a smooth, waxy appearance. It is typically active during the spring and fall months when moisture is more prevalent.
Small disk apothecia of ascomycete mushrooms Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) on wet leaves in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 20, 2019
Ascomycete mushrooms Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) on wet rotting leaves in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 20, 2019
Ascomycete mushrooms Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) on wet rotting leaves near a creek in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 20, 2019
White apothecia of ascomycete mushrooms Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) on wet leaves in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 20, 2019
Close up of ascomycete mushrooms Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 20, 2019
Masses of tiny ascomycete mushrooms Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) on a wet rotting leaf in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 20, 2019
Tiny white disks of ascomycete mushroom Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) on a leaf in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 20, 2019
Ascomycete mushrooms Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) on dry leaves on a property at 5369 Farm to Market Road 770 near Kountze. Texas, June 8, 2019
Tiny white disks of ascomycete fungus Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) on a leaf in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 25, 2020
Small disk apothecia of ascomycete mushrooms Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) on wet leaves in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 25, 2020
Ascomycete fungus Hymenoscyphus epiphyllus(?) on a dry leaf on wet mud on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021
Cup fungus Hymenoscyphus epiphyllus(?) on a dry leaf together with Scutellinia superba on wet mud on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021
Small cup mushrooms Hymenoscyphus epiphyllus on a dry leaves in muddy place on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021
Tiny Ascomycete mushrooms Hymenoscyphus epiphyllus on a dry leaves in muddy place on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021
Tiny cup fungus Hymenoscyphus epiphyllus on a dry leaves in muddy place on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021
Cup fungus Hymenoscyphus epiphyllus on a dry leaves together with Scutellinia superba on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021
Eyelash fungus Scutellinia superba together with cup fungus Hymenoscyphus epiphyllus on dry leaves on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021
Masses of small cups of fungus Hymenoscyphus epiphyllus(?) on a dry leaf in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021
Side view of cup fungus Hymenoscyphus epiphyllus(?) on a dry leaf on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021
Ascomycete mushrooms Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) on an oak leaf near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, April 15, 2021
Small cup fungus Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) on underside of an oak leaf near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, April 15, 2021
Tiny cups of fungus Phaeohelotium epiphyllum (Hymenoscyphus epiphyllus) on underside of an oak leaf near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, April 15, 2021In East and Central Texas, Hymenoscyphus epiphyllus was observed growing on wet and rotting leaves, as well as dry leaves, in various locations including Big Creek Scenic Area of Sam Houston National Forest and Caney Creek Trail. The fungus formed small disk apothecia or cup-shaped structures, often in masses, on the leaves. It was found in areas with high moisture, such as near creeks and in muddy places. The observations were made during different times of the year, including April 2019, June 2019, April 2020, and April 2021. In some cases, Hymenoscyphus epiphyllus was found growing alongside other fungi, such as Scutellinia superba. The fungus was observed on various types of leaves, including oak leaves. Overall, the observations suggest that Hymenoscyphus epiphyllus is a common species in East and Central Texas, particularly in areas with high humidity and moisture.
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